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Finding the Fourth Proportional to 487,369.80, 731,054.70 and 369,271.80

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Solution

The fourth proportional to 487,369.80, 731,054.70 and 369,271.80 is: 553,907.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,369.80 : 731,054.70 = 369,271.80 : x
  2. Step 2: Convert to fraction form
    487,369.80/731,054.70 = 369,271.80/x
  3. Step 3: Cross multiply
    487,369.80x = 731,054.70 × 369,271.80
  4. Step 4: Simplify right side
    487,369.80x = 269,957,884,967.46
  5. Step 5: Solve for x
    x = 269,957,884,967.46/487,369.80
  6. Step 6: Final answer
    x = 553,907.70

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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.