Home / 457,275.57-631,145.28-304,320.23

Finding the Fourth Proportional to 457,275.57, 631,145.28 and 304,320.23

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Solution

The fourth proportional to 457,275.57, 631,145.28 and 304,320.23 is: 420,031.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,275.57 : 631,145.28 = 304,320.23 : x
  2. Step 2: Convert to fraction form
    457,275.57/631,145.28 = 304,320.23/x
  3. Step 3: Cross multiply
    457,275.57x = 631,145.28 × 304,320.23
  4. Step 4: Simplify right side
    457,275.57x = 192,070,276,773.01
  5. Step 5: Solve for x
    x = 192,070,276,773.01/457,275.57
  6. Step 6: Final answer
    x = 420,031.79

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.