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Finding the Fourth Proportional to 296,715.84, 445,089.15 and 86,370.18

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Solution

The fourth proportional to 296,715.84, 445,089.15 and 86,370.18 is: 129,559.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,715.84 : 445,089.15 = 86,370.18 : x
  2. Step 2: Convert to fraction form
    296,715.84/445,089.15 = 86,370.18/x
  3. Step 3: Cross multiply
    296,715.84x = 445,089.15 × 86,370.18
  4. Step 4: Simplify right side
    296,715.84x = 38,442,430,001.55
  5. Step 5: Solve for x
    x = 38,442,430,001.55/296,715.84
  6. Step 6: Final answer
    x = 129,559.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.