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Finding the Fourth Proportional to 315,636.80, 473,455.20 and 157,808.30

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Solution

The fourth proportional to 315,636.80, 473,455.20 and 157,808.30 is: 236,712.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,636.80 : 473,455.20 = 157,808.30 : x
  2. Step 2: Convert to fraction form
    315,636.80/473,455.20 = 157,808.30/x
  3. Step 3: Cross multiply
    315,636.80x = 473,455.20 × 157,808.30
  4. Step 4: Simplify right side
    315,636.80x = 74,715,160,238.16
  5. Step 5: Solve for x
    x = 74,715,160,238.16/315,636.80
  6. Step 6: Final answer
    x = 236,712.45

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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.