Home / 431,928,005.60-647,948,840.40-159,490,143.20

Finding the Fourth Proportional to 431,928,005.60, 647,948,840.40 and 159,490,143.20

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Solution

The fourth proportional to 431,928,005.60, 647,948,840.40 and 159,490,143.20 is: 239,256,200.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,928,005.60 : 647,948,840.40 = 159,490,143.20 : x
  2. Step 2: Convert to fraction form
    431,928,005.60/647,948,840.40 = 159,490,143.20/x
  3. Step 3: Cross multiply
    431,928,005.60x = 647,948,840.40 × 159,490,143.20
  4. Step 4: Simplify right side
    431,928,005.60x = 103,341,453,341,669,936
  5. Step 5: Solve for x
    x = 103,341,453,341,669,936/431,928,005.60
  6. Step 6: Final answer
    x = 239,256,200.11

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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.