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Finding the Fourth Proportional to 291,695.16, 402,539.50 and 157,559.16

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Solution

The fourth proportional to 291,695.16, 402,539.50 and 157,559.16 is: 217,431.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,695.16 : 402,539.50 = 157,559.16 : x
  2. Step 2: Convert to fraction form
    291,695.16/402,539.50 = 157,559.16/x
  3. Step 3: Cross multiply
    291,695.16x = 402,539.50 × 157,559.16
  4. Step 4: Simplify right side
    291,695.16x = 63,423,785,486.82
  5. Step 5: Solve for x
    x = 63,423,785,486.82/291,695.16
  6. Step 6: Final answer
    x = 217,431.74

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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.