Home / 310,307.08-465,451.32-85,681.24

Finding the Fourth Proportional to 310,307.08, 465,451.32 and 85,681.24

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Solution

The fourth proportional to 310,307.08, 465,451.32 and 85,681.24 is: 128,519.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,307.08 : 465,451.32 = 85,681.24 : x
  2. Step 2: Convert to fraction form
    310,307.08/465,451.32 = 85,681.24/x
  3. Step 3: Cross multiply
    310,307.08x = 465,451.32 × 85,681.24
  4. Step 4: Simplify right side
    310,307.08x = 39,880,446,257.24
  5. Step 5: Solve for x
    x = 39,880,446,257.24/310,307.08
  6. Step 6: Final answer
    x = 128,519.29

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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.