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Finding the Fourth Proportional to 284,779.36, 392,960.88 and 157,437.28

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Solution

The fourth proportional to 284,779.36, 392,960.88 and 157,437.28 is: 217,244.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,779.36 : 392,960.88 = 157,437.28 : x
  2. Step 2: Convert to fraction form
    284,779.36/392,960.88 = 157,437.28/x
  3. Step 3: Cross multiply
    284,779.36x = 392,960.88 × 157,437.28
  4. Step 4: Simplify right side
    284,779.36x = 61,866,692,093.61
  5. Step 5: Solve for x
    x = 61,866,692,093.61/284,779.36
  6. Step 6: Final answer
    x = 217,244.30

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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.