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Finding the Fourth Proportional to 356,875.70, 535,313.55 and 146,405.30

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Solution

The fourth proportional to 356,875.70, 535,313.55 and 146,405.30 is: 219,607.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,875.70 : 535,313.55 = 146,405.30 : x
  2. Step 2: Convert to fraction form
    356,875.70/535,313.55 = 146,405.30/x
  3. Step 3: Cross multiply
    356,875.70x = 535,313.55 × 146,405.30
  4. Step 4: Simplify right side
    356,875.70x = 78,372,740,881.82
  5. Step 5: Solve for x
    x = 78,372,740,881.82/356,875.70
  6. Step 6: Final answer
    x = 219,607.95

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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.