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Finding the Fourth Proportional to 253,386.80, 349,710.88 and 145,935.92

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Solution

The fourth proportional to 253,386.80, 349,710.88 and 145,935.92 is: 201,412.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,386.80 : 349,710.88 = 145,935.92 : x
  2. Step 2: Convert to fraction form
    253,386.80/349,710.88 = 145,935.92/x
  3. Step 3: Cross multiply
    253,386.80x = 349,710.88 × 145,935.92
  4. Step 4: Simplify right side
    253,386.80x = 51,035,379,006.81
  5. Step 5: Solve for x
    x = 51,035,379,006.81/253,386.80
  6. Step 6: Final answer
    x = 201,412.93

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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.