Home / 257,445,966.40-386,168,949.60-206,427,630.40

Finding the Fourth Proportional to 257,445,966.40, 386,168,949.60 and 206,427,630.40

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Solution

The fourth proportional to 257,445,966.40, 386,168,949.60 and 206,427,630.40 is: 309,641,445.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,445,966.40 : 386,168,949.60 = 206,427,630.40 : x
  2. Step 2: Convert to fraction form
    257,445,966.40/386,168,949.60 = 206,427,630.40/x
  3. Step 3: Cross multiply
    257,445,966.40x = 386,168,949.60 × 206,427,630.40
  4. Step 4: Simplify right side
    257,445,966.40x = 79,715,941,199,985,040
  5. Step 5: Solve for x
    x = 79,715,941,199,985,040/257,445,966.40
  6. Step 6: Final answer
    x = 309,641,445.60

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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.