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Finding the Fourth Proportional to 291,779.84, 402,772.14 and 250,781.69

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Solution

The fourth proportional to 291,779.84, 402,772.14 and 250,781.69 is: 346,178.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,779.84 : 402,772.14 = 250,781.69 : x
  2. Step 2: Convert to fraction form
    291,779.84/402,772.14 = 250,781.69/x
  3. Step 3: Cross multiply
    291,779.84x = 402,772.14 × 250,781.69
  4. Step 4: Simplify right side
    291,779.84x = 101,007,875,940.26
  5. Step 5: Solve for x
    x = 101,007,875,940.26/291,779.84
  6. Step 6: Final answer
    x = 346,178.40

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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.