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Finding the Fourth Proportional to 316,980.19, 437,443.50 and 173,740.20

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Solution

The fourth proportional to 316,980.19, 437,443.50 and 173,740.20 is: 239,767.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,980.19 : 437,443.50 = 173,740.20 : x
  2. Step 2: Convert to fraction form
    316,980.19/437,443.50 = 173,740.20/x
  3. Step 3: Cross multiply
    316,980.19x = 437,443.50 × 173,740.20
  4. Step 4: Simplify right side
    316,980.19x = 76,001,521,178.70
  5. Step 5: Solve for x
    x = 76,001,521,178.70/316,980.19
  6. Step 6: Final answer
    x = 239,767.42

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1.5x scale

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.