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Finding the Fourth Proportional to 559,784.80, 839,139.60 and 185,615.20

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Solution

The fourth proportional to 559,784.80, 839,139.60 and 185,615.20 is: 278,244.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,784.80 : 839,139.60 = 185,615.20 : x
  2. Step 2: Convert to fraction form
    559,784.80/839,139.60 = 185,615.20/x
  3. Step 3: Cross multiply
    559,784.80x = 839,139.60 × 185,615.20
  4. Step 4: Simplify right side
    559,784.80x = 155,757,064,681.92
  5. Step 5: Solve for x
    x = 155,757,064,681.92/559,784.80
  6. Step 6: Final answer
    x = 278,244.54

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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.