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Finding the Fourth Proportional to 253,309.64, 349,510.11 and 151,315.18

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Solution

The fourth proportional to 253,309.64, 349,510.11 and 151,315.18 is: 208,780.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,309.64 : 349,510.11 = 151,315.18 : x
  2. Step 2: Convert to fraction form
    253,309.64/349,510.11 = 151,315.18/x
  3. Step 3: Cross multiply
    253,309.64x = 349,510.11 × 151,315.18
  4. Step 4: Simplify right side
    253,309.64x = 52,886,185,731.26
  5. Step 5: Solve for x
    x = 52,886,185,731.26/253,309.64
  6. Step 6: Final answer
    x = 208,780.79

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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.