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Finding the Fourth Proportional to 318,663.60, 439,768.32 and 175,436.96

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Solution

The fourth proportional to 318,663.60, 439,768.32 and 175,436.96 is: 242,109.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,663.60 : 439,768.32 = 175,436.96 : x
  2. Step 2: Convert to fraction form
    318,663.60/439,768.32 = 175,436.96/x
  3. Step 3: Cross multiply
    318,663.60x = 439,768.32 × 175,436.96
  4. Step 4: Simplify right side
    318,663.60x = 77,151,617,165.11
  5. Step 5: Solve for x
    x = 77,151,617,165.11/318,663.60
  6. Step 6: Final answer
    x = 242,109.92

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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.