Home / 287,061.24-431,378.64-270,756.84

Finding the Fourth Proportional to 287,061.24, 431,378.64 and 270,756.84

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Solution

The fourth proportional to 287,061.24, 431,378.64 and 270,756.84 is: 406,877.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,061.24 : 431,378.64 = 270,756.84 : x
  2. Step 2: Convert to fraction form
    287,061.24/431,378.64 = 270,756.84/x
  3. Step 3: Cross multiply
    287,061.24x = 431,378.64 × 270,756.84
  4. Step 4: Simplify right side
    287,061.24x = 116,798,717,409.90
  5. Step 5: Solve for x
    x = 116,798,717,409.90/287,061.24
  6. Step 6: Final answer
    x = 406,877.35

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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.