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Finding the Fourth Proportional to 401,032.56, 553,400.46 and 228,970.20

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Solution

The fourth proportional to 401,032.56, 553,400.46 and 228,970.20 is: 315,964.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,032.56 : 553,400.46 = 228,970.20 : x
  2. Step 2: Convert to fraction form
    401,032.56/553,400.46 = 228,970.20/x
  3. Step 3: Cross multiply
    401,032.56x = 553,400.46 × 228,970.20
  4. Step 4: Simplify right side
    401,032.56x = 126,712,214,006.29
  5. Step 5: Solve for x
    x = 126,712,214,006.29/401,032.56
  6. Step 6: Final answer
    x = 315,964.90

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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.