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Finding the Fourth Proportional to 370,312.40, 511,031.40 and 209,167.76

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Solution

The fourth proportional to 370,312.40, 511,031.40 and 209,167.76 is: 288,651.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,312.40 : 511,031.40 = 209,167.76 : x
  2. Step 2: Convert to fraction form
    370,312.40/511,031.40 = 209,167.76/x
  3. Step 3: Cross multiply
    370,312.40x = 511,031.40 × 209,167.76
  4. Step 4: Simplify right side
    370,312.40x = 106,891,293,227.66
  5. Step 5: Solve for x
    x = 106,891,293,227.66/370,312.40
  6. Step 6: Final answer
    x = 288,651.67

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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.