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Finding the Fourth Proportional to 342,798.12, 473,005.17 and 215,383.50

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Solution

The fourth proportional to 342,798.12, 473,005.17 and 215,383.50 is: 297,193.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,798.12 : 473,005.17 = 215,383.50 : x
  2. Step 2: Convert to fraction form
    342,798.12/473,005.17 = 215,383.50/x
  3. Step 3: Cross multiply
    342,798.12x = 473,005.17 × 215,383.50
  4. Step 4: Simplify right side
    342,798.12x = 101,877,509,032.70
  5. Step 5: Solve for x
    x = 101,877,509,032.70/342,798.12
  6. Step 6: Final answer
    x = 297,193.90

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1.5x scale

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.