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Finding the Fourth Proportional to 487,228.80, 730,843.20 and 369,130.80

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Solution

The fourth proportional to 487,228.80, 730,843.20 and 369,130.80 is: 553,696.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,228.80 : 730,843.20 = 369,130.80 : x
  2. Step 2: Convert to fraction form
    487,228.80/730,843.20 = 369,130.80/x
  3. Step 3: Cross multiply
    487,228.80x = 730,843.20 × 369,130.80
  4. Step 4: Simplify right side
    487,228.80x = 269,776,735,090.56
  5. Step 5: Solve for x
    x = 269,776,735,090.56/487,228.80
  6. Step 6: Final answer
    x = 553,696.20

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.