Home / 400,528,987.60-600,861,313.92-138,142,295.72

Finding the Fourth Proportional to 400,528,987.60, 600,861,313.92 and 138,142,295.72

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Solution

The fourth proportional to 400,528,987.60, 600,861,313.92 and 138,142,295.72 is: 207,236,838.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,528,987.60 : 600,861,313.92 = 138,142,295.72 : x
  2. Step 2: Convert to fraction form
    400,528,987.60/600,861,313.92 = 138,142,295.72/x
  3. Step 3: Cross multiply
    400,528,987.60x = 600,861,313.92 × 138,142,295.72
  4. Step 4: Simplify right side
    400,528,987.60x = 83,004,361,314,244,384
  5. Step 5: Solve for x
    x = 83,004,361,314,244,384/400,528,987.60
  6. Step 6: Final answer
    x = 207,236,838.99

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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.