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Finding the Fourth Proportional to 258,975.40, 388,463.10 and 176,031.40

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Solution

The fourth proportional to 258,975.40, 388,463.10 and 176,031.40 is: 264,047.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,975.40 : 388,463.10 = 176,031.40 : x
  2. Step 2: Convert to fraction form
    258,975.40/388,463.10 = 176,031.40/x
  3. Step 3: Cross multiply
    258,975.40x = 388,463.10 × 176,031.40
  4. Step 4: Simplify right side
    258,975.40x = 68,381,703,341.34
  5. Step 5: Solve for x
    x = 68,381,703,341.34/258,975.40
  6. Step 6: Final answer
    x = 264,047.10

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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.