Home / 287,864,167.80-431,796,251.70-165,420,161.40

Finding the Fourth Proportional to 287,864,167.80, 431,796,251.70 and 165,420,161.40

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Solution

The fourth proportional to 287,864,167.80, 431,796,251.70 and 165,420,161.40 is: 248,130,242.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,864,167.80 : 431,796,251.70 = 165,420,161.40 : x
  2. Step 2: Convert to fraction form
    287,864,167.80/431,796,251.70 = 165,420,161.40/x
  3. Step 3: Cross multiply
    287,864,167.80x = 431,796,251.70 × 165,420,161.40
  4. Step 4: Simplify right side
    287,864,167.80x = 71,427,805,648,129,024
  5. Step 5: Solve for x
    x = 71,427,805,648,129,024/287,864,167.80
  6. Step 6: Final answer
    x = 248,130,242.10

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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.