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Finding the Fourth Proportional to 611,740.10, 917,610.15 and 162,530.30

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Solution

The fourth proportional to 611,740.10, 917,610.15 and 162,530.30 is: 243,795.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,740.10 : 917,610.15 = 162,530.30 : x
  2. Step 2: Convert to fraction form
    611,740.10/917,610.15 = 162,530.30/x
  3. Step 3: Cross multiply
    611,740.10x = 917,610.15 × 162,530.30
  4. Step 4: Simplify right side
    611,740.10x = 149,139,452,962.55
  5. Step 5: Solve for x
    x = 149,139,452,962.55/611,740.10
  6. Step 6: Final answer
    x = 243,795.45

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Similar ratio
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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.