Home / 321,623.20-482,031.60-163,914.40

Finding the Fourth Proportional to 321,623.20, 482,031.60 and 163,914.40

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Solution

The fourth proportional to 321,623.20, 482,031.60 and 163,914.40 is: 245,666.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,623.20 : 482,031.60 = 163,914.40 : x
  2. Step 2: Convert to fraction form
    321,623.20/482,031.60 = 163,914.40/x
  3. Step 3: Cross multiply
    321,623.20x = 482,031.60 × 163,914.40
  4. Step 4: Simplify right side
    321,623.20x = 79,011,920,495.04
  5. Step 5: Solve for x
    x = 79,011,920,495.04/321,623.20
  6. Step 6: Final answer
    x = 245,666.11

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1.5x scale

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.