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Finding the Fourth Proportional to 611,551.80, 917,327.70 and 162,271.80

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Solution

The fourth proportional to 611,551.80, 917,327.70 and 162,271.80 is: 243,407.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,551.80 : 917,327.70 = 162,271.80 : x
  2. Step 2: Convert to fraction form
    611,551.80/917,327.70 = 162,271.80/x
  3. Step 3: Cross multiply
    611,551.80x = 917,327.70 × 162,271.80
  4. Step 4: Simplify right side
    611,551.80x = 148,856,417,068.86
  5. Step 5: Solve for x
    x = 148,856,417,068.86/611,551.80
  6. Step 6: Final answer
    x = 243,407.70

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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.