Home / 247,557.15-371,153.61-78,980.45

Finding the Fourth Proportional to 247,557.15, 371,153.61 and 78,980.45

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Solution

The fourth proportional to 247,557.15, 371,153.61 and 78,980.45 is: 118,412.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,557.15 : 371,153.61 = 78,980.45 : x
  2. Step 2: Convert to fraction form
    247,557.15/371,153.61 = 78,980.45/x
  3. Step 3: Cross multiply
    247,557.15x = 371,153.61 × 78,980.45
  4. Step 4: Simplify right side
    247,557.15x = 29,313,877,281.16
  5. Step 5: Solve for x
    x = 29,313,877,281.16/247,557.15
  6. Step 6: Final answer
    x = 118,412.57

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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.