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Finding the Fourth Proportional to 342,312.63, 472,355.07 and 189,326.52

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Solution

The fourth proportional to 342,312.63, 472,355.07 and 189,326.52 is: 261,250.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,312.63 : 472,355.07 = 189,326.52 : x
  2. Step 2: Convert to fraction form
    342,312.63/472,355.07 = 189,326.52/x
  3. Step 3: Cross multiply
    342,312.63x = 472,355.07 × 189,326.52
  4. Step 4: Simplify right side
    342,312.63x = 89,429,341,607.46
  5. Step 5: Solve for x
    x = 89,429,341,607.46/342,312.63
  6. Step 6: Final answer
    x = 261,250.49

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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.