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Finding the Fourth Proportional to 400,443.60, 552,612.12 and 219,155.76

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Solution

The fourth proportional to 400,443.60, 552,612.12 and 219,155.76 is: 302,434.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,443.60 : 552,612.12 = 219,155.76 : x
  2. Step 2: Convert to fraction form
    400,443.60/552,612.12 = 219,155.76/x
  3. Step 3: Cross multiply
    400,443.60x = 552,612.12 × 219,155.76
  4. Step 4: Simplify right side
    400,443.60x = 121,108,129,143.81
  5. Step 5: Solve for x
    x = 121,108,129,143.81/400,443.60
  6. Step 6: Final answer
    x = 302,434.92

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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.