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Finding the Fourth Proportional to 472,417.28, 651,916.64 and 257,553.12

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Solution

The fourth proportional to 472,417.28, 651,916.64 and 257,553.12 is: 355,412.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,417.28 : 651,916.64 = 257,553.12 : x
  2. Step 2: Convert to fraction form
    472,417.28/651,916.64 = 257,553.12/x
  3. Step 3: Cross multiply
    472,417.28x = 651,916.64 × 257,553.12
  4. Step 4: Simplify right side
    472,417.28x = 167,903,164,611.92
  5. Step 5: Solve for x
    x = 167,903,164,611.92/472,417.28
  6. Step 6: Final answer
    x = 355,412.83

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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.