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Finding the Fourth Proportional to 628,751.16, 867,641.22 and 342,254.16

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Solution

The fourth proportional to 628,751.16, 867,641.22 and 342,254.16 is: 472,291.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,751.16 : 867,641.22 = 342,254.16 : x
  2. Step 2: Convert to fraction form
    628,751.16/867,641.22 = 342,254.16/x
  3. Step 3: Cross multiply
    628,751.16x = 867,641.22 × 342,254.16
  4. Step 4: Simplify right side
    628,751.16x = 296,953,816,932.48
  5. Step 5: Solve for x
    x = 296,953,816,932.48/628,751.16
  6. Step 6: Final answer
    x = 472,291.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.