Home / 287,864,164.80-431,796,247.20-165,420,158.40

Finding the Fourth Proportional to 287,864,164.80, 431,796,247.20 and 165,420,158.40

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Solution

The fourth proportional to 287,864,164.80, 431,796,247.20 and 165,420,158.40 is: 248,130,237.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,864,164.80 : 431,796,247.20 = 165,420,158.40 : x
  2. Step 2: Convert to fraction form
    287,864,164.80/431,796,247.20 = 165,420,158.40/x
  3. Step 3: Cross multiply
    287,864,164.80x = 431,796,247.20 × 165,420,158.40
  4. Step 4: Simplify right side
    287,864,164.80x = 71,427,803,608,349,560
  5. Step 5: Solve for x
    x = 71,427,803,608,349,560/287,864,164.80
  6. Step 6: Final answer
    x = 248,130,237.60

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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.