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Finding the Fourth Proportional to 475,029.60, 655,516.29 and 260,128.20

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Solution

The fourth proportional to 475,029.60, 655,516.29 and 260,128.20 is: 358,963.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,029.60 : 655,516.29 = 260,128.20 : x
  2. Step 2: Convert to fraction form
    475,029.60/655,516.29 = 260,128.20/x
  3. Step 3: Cross multiply
    475,029.60x = 655,516.29 × 260,128.20
  4. Step 4: Simplify right side
    475,029.60x = 170,518,272,588.38
  5. Step 5: Solve for x
    x = 170,518,272,588.38/475,029.60
  6. Step 6: Final answer
    x = 358,963.47

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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.