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Finding the Fourth Proportional to 553,996.80, 831,254.40 and 238,723.20

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Solution

The fourth proportional to 553,996.80, 831,254.40 and 238,723.20 is: 358,196.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,996.80 : 831,254.40 = 238,723.20 : x
  2. Step 2: Convert to fraction form
    553,996.80/831,254.40 = 238,723.20/x
  3. Step 3: Cross multiply
    553,996.80x = 831,254.40 × 238,723.20
  4. Step 4: Simplify right side
    553,996.80x = 198,439,710,382.08
  5. Step 5: Solve for x
    x = 198,439,710,382.08/553,996.80
  6. Step 6: Final answer
    x = 358,196.49

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1.5x scale

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.