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Finding the Fourth Proportional to 611,729.60, 917,594.40 and 162,519.80

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Solution

The fourth proportional to 611,729.60, 917,594.40 and 162,519.80 is: 243,779.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,729.60 : 917,594.40 = 162,519.80 : x
  2. Step 2: Convert to fraction form
    611,729.60/917,594.40 = 162,519.80/x
  3. Step 3: Cross multiply
    611,729.60x = 917,594.40 × 162,519.80
  4. Step 4: Simplify right side
    611,729.60x = 149,127,258,369.12
  5. Step 5: Solve for x
    x = 149,127,258,369.12/611,729.60
  6. Step 6: Final answer
    x = 243,779.70

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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.