Home / 384,721.13-530,898.65-212,630.20

Finding the Fourth Proportional to 384,721.13, 530,898.65 and 212,630.20

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Solution

The fourth proportional to 384,721.13, 530,898.65 and 212,630.20 is: 293,420.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,721.13 : 530,898.65 = 212,630.20 : x
  2. Step 2: Convert to fraction form
    384,721.13/530,898.65 = 212,630.20/x
  3. Step 3: Cross multiply
    384,721.13x = 530,898.65 × 212,630.20
  4. Step 4: Simplify right side
    384,721.13x = 112,885,085,732.24
  5. Step 5: Solve for x
    x = 112,885,085,732.24/384,721.13
  6. Step 6: Final answer
    x = 293,420.55

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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.