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Finding the Fourth Proportional to 349,457.80, 481,061.64 and 258,642.58

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Solution

The fourth proportional to 349,457.80, 481,061.64 and 258,642.58 is: 356,045.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,457.80 : 481,061.64 = 258,642.58 : x
  2. Step 2: Convert to fraction form
    349,457.80/481,061.64 = 258,642.58/x
  3. Step 3: Cross multiply
    349,457.80x = 481,061.64 × 258,642.58
  4. Step 4: Simplify right side
    349,457.80x = 124,423,023,708.63
  5. Step 5: Solve for x
    x = 124,423,023,708.63/349,457.80
  6. Step 6: Final answer
    x = 356,045.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.