Home / 292,115.27-438,195.07-78,880.08

Finding the Fourth Proportional to 292,115.27, 438,195.07 and 78,880.08

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Solution

The fourth proportional to 292,115.27, 438,195.07 and 78,880.08 is: 118,326.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,115.27 : 438,195.07 = 78,880.08 : x
  2. Step 2: Convert to fraction form
    292,115.27/438,195.07 = 78,880.08/x
  3. Step 3: Cross multiply
    292,115.27x = 438,195.07 × 78,880.08
  4. Step 4: Simplify right side
    292,115.27x = 34,564,861,980.01
  5. Step 5: Solve for x
    x = 34,564,861,980.01/292,115.27
  6. Step 6: Final answer
    x = 118,326.10

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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.