Home / 257,445,821.40-386,168,732.10-206,427,485.40

Finding the Fourth Proportional to 257,445,821.40, 386,168,732.10 and 206,427,485.40

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Solution

The fourth proportional to 257,445,821.40, 386,168,732.10 and 206,427,485.40 is: 309,641,228.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,445,821.40 : 386,168,732.10 = 206,427,485.40 : x
  2. Step 2: Convert to fraction form
    257,445,821.40/386,168,732.10 = 206,427,485.40/x
  3. Step 3: Cross multiply
    257,445,821.40x = 386,168,732.10 × 206,427,485.40
  4. Step 4: Simplify right side
    257,445,821.40x = 79,715,840,307,509,264
  5. Step 5: Solve for x
    x = 79,715,840,307,509,264/257,445,821.40
  6. Step 6: Final answer
    x = 309,641,228.10

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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.