Home / 315,623.10-473,031.45-128,423.10

Finding the Fourth Proportional to 315,623.10, 473,031.45 and 128,423.10

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Solution

The fourth proportional to 315,623.10, 473,031.45 and 128,423.10 is: 192,470.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,623.10 : 473,031.45 = 128,423.10 : x
  2. Step 2: Convert to fraction form
    315,623.10/473,031.45 = 128,423.10/x
  3. Step 3: Cross multiply
    315,623.10x = 473,031.45 × 128,423.10
  4. Step 4: Simplify right side
    315,623.10x = 60,748,165,206.50
  5. Step 5: Solve for x
    x = 60,748,165,206.50/315,623.10
  6. Step 6: Final answer
    x = 192,470.59

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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.