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Finding the Fourth Proportional to 210,938.05, 316,507.79 and 98,601.95

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Solution

The fourth proportional to 210,938.05, 316,507.79 and 98,601.95 is: 147,950.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,938.05 : 316,507.79 = 98,601.95 : x
  2. Step 2: Convert to fraction form
    210,938.05/316,507.79 = 98,601.95/x
  3. Step 3: Cross multiply
    210,938.05x = 316,507.79 × 98,601.95
  4. Step 4: Simplify right side
    210,938.05x = 31,208,283,957.86
  5. Step 5: Solve for x
    x = 31,208,283,957.86/210,938.05
  6. Step 6: Final answer
    x = 147,950.00

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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.