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Finding the Fourth Proportional to 660,323.52, 990,878.76 and 239,632.20

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Solution

The fourth proportional to 660,323.52, 990,878.76 and 239,632.20 is: 359,591.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,323.52 : 990,878.76 = 239,632.20 : x
  2. Step 2: Convert to fraction form
    660,323.52/990,878.76 = 239,632.20/x
  3. Step 3: Cross multiply
    660,323.52x = 990,878.76 × 239,632.20
  4. Step 4: Simplify right side
    660,323.52x = 237,446,457,192.07
  5. Step 5: Solve for x
    x = 237,446,457,192.07/660,323.52
  6. Step 6: Final answer
    x = 359,591.09

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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.