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Finding the Fourth Proportional to 660,547.20, 990,820.80 and 239,836.80

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Solution

The fourth proportional to 660,547.20, 990,820.80 and 239,836.80 is: 359,755.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,547.20 : 990,820.80 = 239,836.80 : x
  2. Step 2: Convert to fraction form
    660,547.20/990,820.80 = 239,836.80/x
  3. Step 3: Cross multiply
    660,547.20x = 990,820.80 × 239,836.80
  4. Step 4: Simplify right side
    660,547.20x = 237,635,290,045.44
  5. Step 5: Solve for x
    x = 237,635,290,045.44/660,547.20
  6. Step 6: Final answer
    x = 359,755.20

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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.