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Finding the Fourth Proportional to 377,897, 520,890.10 and 255,351.16

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Solution

The fourth proportional to 377,897, 520,890.10 and 255,351.16 is: 351,973.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,897 : 520,890.10 = 255,351.16 : x
  2. Step 2: Convert to fraction form
    377,897/520,890.10 = 255,351.16/x
  3. Step 3: Cross multiply
    377,897x = 520,890.10 × 255,351.16
  4. Step 4: Simplify right side
    377,897x = 133,009,891,267.52
  5. Step 5: Solve for x
    x = 133,009,891,267.52/377,897
  6. Step 6: Final answer
    x = 351,973.93

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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.