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Finding the Fourth Proportional to 356,507.06, 534,828.02 and 143,291.57

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Solution

The fourth proportional to 356,507.06, 534,828.02 and 143,291.57 is: 214,964.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,507.06 : 534,828.02 = 143,291.57 : x
  2. Step 2: Convert to fraction form
    356,507.06/534,828.02 = 143,291.57/x
  3. Step 3: Cross multiply
    356,507.06x = 534,828.02 × 143,291.57
  4. Step 4: Simplify right side
    356,507.06x = 76,636,343,275.19
  5. Step 5: Solve for x
    x = 76,636,343,275.19/356,507.06
  6. Step 6: Final answer
    x = 214,964.45

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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.