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Finding the Fourth Proportional to 614,430.80, 922,061.28 and 215,074.88

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Solution

The fourth proportional to 614,430.80, 922,061.28 and 215,074.88 is: 322,757.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,430.80 : 922,061.28 = 215,074.88 : x
  2. Step 2: Convert to fraction form
    614,430.80/922,061.28 = 215,074.88/x
  3. Step 3: Cross multiply
    614,430.80x = 922,061.28 × 215,074.88
  4. Step 4: Simplify right side
    614,430.80x = 198,312,219,148.65
  5. Step 5: Solve for x
    x = 198,312,219,148.65/614,430.80
  6. Step 6: Final answer
    x = 322,757.61

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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.