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Finding the Fourth Proportional to 410,742.40, 616,113.60 and 115,254.40

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Solution

The fourth proportional to 410,742.40, 616,113.60 and 115,254.40 is: 172,881.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,742.40 : 616,113.60 = 115,254.40 : x
  2. Step 2: Convert to fraction form
    410,742.40/616,113.60 = 115,254.40/x
  3. Step 3: Cross multiply
    410,742.40x = 616,113.60 × 115,254.40
  4. Step 4: Simplify right side
    410,742.40x = 71,009,803,299.84
  5. Step 5: Solve for x
    x = 71,009,803,299.84/410,742.40
  6. Step 6: Final answer
    x = 172,881.60

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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.