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Finding the Fourth Proportional to 660,281.52, 990,815.76 and 239,590.20

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Solution

The fourth proportional to 660,281.52, 990,815.76 and 239,590.20 is: 359,528.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,281.52 : 990,815.76 = 239,590.20 : x
  2. Step 2: Convert to fraction form
    660,281.52/990,815.76 = 239,590.20/x
  3. Step 3: Cross multiply
    660,281.52x = 990,815.76 × 239,590.20
  4. Step 4: Simplify right side
    660,281.52x = 237,389,746,101.55
  5. Step 5: Solve for x
    x = 237,389,746,101.55/660,281.52
  6. Step 6: Final answer
    x = 359,528.08

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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.