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Finding the Fourth Proportional to 315,963.35, 473,525.84 and 138,276.89

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Solution

The fourth proportional to 315,963.35, 473,525.84 and 138,276.89 is: 207,231.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,963.35 : 473,525.84 = 138,276.89 : x
  2. Step 2: Convert to fraction form
    315,963.35/473,525.84 = 138,276.89/x
  3. Step 3: Cross multiply
    315,963.35x = 473,525.84 × 138,276.89
  4. Step 4: Simplify right side
    315,963.35x = 65,477,677,430.82
  5. Step 5: Solve for x
    x = 65,477,677,430.82/315,963.35
  6. Step 6: Final answer
    x = 207,231.88

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1.5x scale

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.