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Finding the Fourth Proportional to 611,574.10, 917,361.15 and 162,364.30

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Solution

The fourth proportional to 611,574.10, 917,361.15 and 162,364.30 is: 243,546.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,574.10 : 917,361.15 = 162,364.30 : x
  2. Step 2: Convert to fraction form
    611,574.10/917,361.15 = 162,364.30/x
  3. Step 3: Cross multiply
    611,574.10x = 917,361.15 × 162,364.30
  4. Step 4: Simplify right side
    611,574.10x = 148,946,700,966.95
  5. Step 5: Solve for x
    x = 148,946,700,966.95/611,574.10
  6. Step 6: Final answer
    x = 243,546.45

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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.