Home / 509,089.20-763,439.40-153,985.20

Finding the Fourth Proportional to 509,089.20, 763,439.40 and 153,985.20

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Solution

The fourth proportional to 509,089.20, 763,439.40 and 153,985.20 is: 230,919.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,089.20 : 763,439.40 = 153,985.20 : x
  2. Step 2: Convert to fraction form
    509,089.20/763,439.40 = 153,985.20/x
  3. Step 3: Cross multiply
    509,089.20x = 763,439.40 × 153,985.20
  4. Step 4: Simplify right side
    509,089.20x = 117,558,368,696.88
  5. Step 5: Solve for x
    x = 117,558,368,696.88/509,089.20
  6. Step 6: Final answer
    x = 230,919.00

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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.