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Finding the Fourth Proportional to 377,031.65, 520,300.01 and 280,666.44

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Solution

The fourth proportional to 377,031.65, 520,300.01 and 280,666.44 is: 387,316.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,031.65 : 520,300.01 = 280,666.44 : x
  2. Step 2: Convert to fraction form
    377,031.65/520,300.01 = 280,666.44/x
  3. Step 3: Cross multiply
    377,031.65x = 520,300.01 × 280,666.44
  4. Step 4: Simplify right side
    377,031.65x = 146,030,750,135.33
  5. Step 5: Solve for x
    x = 146,030,750,135.33/377,031.65
  6. Step 6: Final answer
    x = 387,316.96

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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.