Home / 472,221.28-651,646.08-257,356.72

Finding the Fourth Proportional to 472,221.28, 651,646.08 and 257,356.72

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Solution

The fourth proportional to 472,221.28, 651,646.08 and 257,356.72 is: 355,141.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,221.28 : 651,646.08 = 257,356.72 : x
  2. Step 2: Convert to fraction form
    472,221.28/651,646.08 = 257,356.72/x
  3. Step 3: Cross multiply
    472,221.28x = 651,646.08 × 257,356.72
  4. Step 4: Simplify right side
    472,221.28x = 167,705,497,749.66
  5. Step 5: Solve for x
    x = 167,705,497,749.66/472,221.28
  6. Step 6: Final answer
    x = 355,141.76

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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.