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Finding the Fourth Proportional to 291,779.07, 402,654.72 and 157,643.07

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Solution

The fourth proportional to 291,779.07, 402,654.72 and 157,643.07 is: 217,547.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,779.07 : 402,654.72 = 157,643.07 : x
  2. Step 2: Convert to fraction form
    291,779.07/402,654.72 = 157,643.07/x
  3. Step 3: Cross multiply
    291,779.07x = 402,654.72 × 157,643.07
  4. Step 4: Simplify right side
    291,779.07x = 63,475,726,210.79
  5. Step 5: Solve for x
    x = 63,475,726,210.79/291,779.07
  6. Step 6: Final answer
    x = 217,547.22

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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.