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Finding the Fourth Proportional to 426,700.14, 640,143.72 and 160,460.57

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Solution

The fourth proportional to 426,700.14, 640,143.72 and 160,460.57 is: 240,726.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,700.14 : 640,143.72 = 160,460.57 : x
  2. Step 2: Convert to fraction form
    426,700.14/640,143.72 = 160,460.57/x
  3. Step 3: Cross multiply
    426,700.14x = 640,143.72 × 160,460.57
  4. Step 4: Simplify right side
    426,700.14x = 102,717,822,992.40
  5. Step 5: Solve for x
    x = 102,717,822,992.40/426,700.14
  6. Step 6: Final answer
    x = 240,726.01

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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.