Home / 389,443.95-537,436.76-217,378.35

Finding the Fourth Proportional to 389,443.95, 537,436.76 and 217,378.35

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Solution

The fourth proportional to 389,443.95, 537,436.76 and 217,378.35 is: 299,984.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,443.95 : 537,436.76 = 217,378.35 : x
  2. Step 2: Convert to fraction form
    389,443.95/537,436.76 = 217,378.35/x
  3. Step 3: Cross multiply
    389,443.95x = 537,436.76 × 217,378.35
  4. Step 4: Simplify right side
    389,443.95x = 116,827,115,031.25
  5. Step 5: Solve for x
    x = 116,827,115,031.25/389,443.95
  6. Step 6: Final answer
    x = 299,984.41

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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.