Home / 320,623.80-442,473-175,439.40

Finding the Fourth Proportional to 320,623.80, 442,473 and 175,439.40

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Solution

The fourth proportional to 320,623.80, 442,473 and 175,439.40 is: 242,113.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,623.80 : 442,473 = 175,439.40 : x
  2. Step 2: Convert to fraction form
    320,623.80/442,473 = 175,439.40/x
  3. Step 3: Cross multiply
    320,623.80x = 442,473 × 175,439.40
  4. Step 4: Simplify right side
    320,623.80x = 77,627,197,636.20
  5. Step 5: Solve for x
    x = 77,627,197,636.20/320,623.80
  6. Step 6: Final answer
    x = 242,113.02

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1.5x scale

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.