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Finding the Fourth Proportional to 284,655.56, 392,845.02 and 157,328.40

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Solution

The fourth proportional to 284,655.56, 392,845.02 and 157,328.40 is: 217,124.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,655.56 : 392,845.02 = 157,328.40 : x
  2. Step 2: Convert to fraction form
    284,655.56/392,845.02 = 157,328.40/x
  3. Step 3: Cross multiply
    284,655.56x = 392,845.02 × 157,328.40
  4. Step 4: Simplify right side
    284,655.56x = 61,805,678,444.57
  5. Step 5: Solve for x
    x = 61,805,678,444.57/284,655.56
  6. Step 6: Final answer
    x = 217,124.44

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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.