Home / 389,220.16-537,123.68-210,372.16

Finding the Fourth Proportional to 389,220.16, 537,123.68 and 210,372.16

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Solution

The fourth proportional to 389,220.16, 537,123.68 and 210,372.16 is: 290,313.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,220.16 : 537,123.68 = 210,372.16 : x
  2. Step 2: Convert to fraction form
    389,220.16/537,123.68 = 210,372.16/x
  3. Step 3: Cross multiply
    389,220.16x = 537,123.68 × 210,372.16
  4. Step 4: Simplify right side
    389,220.16x = 112,995,868,748.75
  5. Step 5: Solve for x
    x = 112,995,868,748.75/389,220.16
  6. Step 6: Final answer
    x = 290,313.50

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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.