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Finding the Fourth Proportional to 408,395.76, 563,503.56 and 238,597.08

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Solution

The fourth proportional to 408,395.76, 563,503.56 and 238,597.08 is: 329,215.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,395.76 : 563,503.56 = 238,597.08 : x
  2. Step 2: Convert to fraction form
    408,395.76/563,503.56 = 238,597.08/x
  3. Step 3: Cross multiply
    408,395.76x = 563,503.56 × 238,597.08
  4. Step 4: Simplify right side
    408,395.76x = 134,450,303,985.61
  5. Step 5: Solve for x
    x = 134,450,303,985.61/408,395.76
  6. Step 6: Final answer
    x = 329,215.72

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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.