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Finding the Fourth Proportional to 247,117.60, 370,676.40 and 147,390.40

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Solution

The fourth proportional to 247,117.60, 370,676.40 and 147,390.40 is: 221,085.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,117.60 : 370,676.40 = 147,390.40 : x
  2. Step 2: Convert to fraction form
    247,117.60/370,676.40 = 147,390.40/x
  3. Step 3: Cross multiply
    247,117.60x = 370,676.40 × 147,390.40
  4. Step 4: Simplify right side
    247,117.60x = 54,634,142,866.56
  5. Step 5: Solve for x
    x = 54,634,142,866.56/247,117.60
  6. Step 6: Final answer
    x = 221,085.60

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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.