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Finding the Fourth Proportional to 320,870.64, 442,806.76 and 175,674

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Solution

The fourth proportional to 320,870.64, 442,806.76 and 175,674 is: 242,433.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,870.64 : 442,806.76 = 175,674 : x
  2. Step 2: Convert to fraction form
    320,870.64/442,806.76 = 175,674/x
  3. Step 3: Cross multiply
    320,870.64x = 442,806.76 × 175,674
  4. Step 4: Simplify right side
    320,870.64x = 77,789,634,756.24
  5. Step 5: Solve for x
    x = 77,789,634,756.24/320,870.64
  6. Step 6: Final answer
    x = 242,433.01

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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.