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Finding the Fourth Proportional to 612,410.88, 918,120.64 and 191,470.08

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Solution

The fourth proportional to 612,410.88, 918,120.64 and 191,470.08 is: 287,050.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,410.88 : 918,120.64 = 191,470.08 : x
  2. Step 2: Convert to fraction form
    612,410.88/918,120.64 = 191,470.08/x
  3. Step 3: Cross multiply
    612,410.88x = 918,120.64 × 191,470.08
  4. Step 4: Simplify right side
    612,410.88x = 175,792,632,390.45
  5. Step 5: Solve for x
    x = 175,792,632,390.45/612,410.88
  6. Step 6: Final answer
    x = 287,050.15

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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.