Home / 304,948,821.20-420,828,233.10-172,814,995.40

Finding the Fourth Proportional to 304,948,821.20, 420,828,233.10 and 172,814,995.40

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Solution

The fourth proportional to 304,948,821.20, 420,828,233.10 and 172,814,995.40 is: 238,484,047.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,948,821.20 : 420,828,233.10 = 172,814,995.40 : x
  2. Step 2: Convert to fraction form
    304,948,821.20/420,828,233.10 = 172,814,995.40/x
  3. Step 3: Cross multiply
    304,948,821.20x = 420,828,233.10 × 172,814,995.40
  4. Step 4: Simplify right side
    304,948,821.20x = 72,725,429,167,366,640
  5. Step 5: Solve for x
    x = 72,725,429,167,366,640/304,948,821.20
  6. Step 6: Final answer
    x = 238,484,047.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.