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Finding the Fourth Proportional to 426,853.80, 638,898.30 and 302,437.80

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Solution

The fourth proportional to 426,853.80, 638,898.30 and 302,437.80 is: 452,677.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,853.80 : 638,898.30 = 302,437.80 : x
  2. Step 2: Convert to fraction form
    426,853.80/638,898.30 = 302,437.80/x
  3. Step 3: Cross multiply
    426,853.80x = 638,898.30 × 302,437.80
  4. Step 4: Simplify right side
    426,853.80x = 193,226,996,275.74
  5. Step 5: Solve for x
    x = 193,226,996,275.74/426,853.80
  6. Step 6: Final answer
    x = 452,677.23

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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.