Home / 345,655.12-520,349.95-310,895.41

Finding the Fourth Proportional to 345,655.12, 520,349.95 and 310,895.41

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Solution

The fourth proportional to 345,655.12, 520,349.95 and 310,895.41 is: 468,022.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,655.12 : 520,349.95 = 310,895.41 : x
  2. Step 2: Convert to fraction form
    345,655.12/520,349.95 = 310,895.41/x
  3. Step 3: Cross multiply
    345,655.12x = 520,349.95 × 310,895.41
  4. Step 4: Simplify right side
    345,655.12x = 161,774,411,048.73
  5. Step 5: Solve for x
    x = 161,774,411,048.73/345,655.12
  6. Step 6: Final answer
    x = 468,022.61

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.