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Finding the Fourth Proportional to 400,988.87, 553,294.31 and 228,828.23

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Solution

The fourth proportional to 400,988.87, 553,294.31 and 228,828.23 is: 315,742.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,988.87 : 553,294.31 = 228,828.23 : x
  2. Step 2: Convert to fraction form
    400,988.87/553,294.31 = 228,828.23/x
  3. Step 3: Cross multiply
    400,988.87x = 553,294.31 × 228,828.23
  4. Step 4: Simplify right side
    400,988.87x = 126,609,353,715.76
  5. Step 5: Solve for x
    x = 126,609,353,715.76/400,988.87
  6. Step 6: Final answer
    x = 315,742.82

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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.