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Finding the Fourth Proportional to 615,365.80, 923,143.74 and 260,381.80

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Solution

The fourth proportional to 615,365.80, 923,143.74 and 260,381.80 is: 390,612.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,365.80 : 923,143.74 = 260,381.80 : x
  2. Step 2: Convert to fraction form
    615,365.80/923,143.74 = 260,381.80/x
  3. Step 3: Cross multiply
    615,365.80x = 923,143.74 × 260,381.80
  4. Step 4: Simplify right side
    615,365.80x = 240,369,828,679.93
  5. Step 5: Solve for x
    x = 240,369,828,679.93/615,365.80
  6. Step 6: Final answer
    x = 390,612.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.