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Finding the Fourth Proportional to 510,529.07, 765,907.82 and 155,570.87

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Solution

The fourth proportional to 510,529.07, 765,907.82 and 155,570.87 is: 233,391.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,529.07 : 765,907.82 = 155,570.87 : x
  2. Step 2: Convert to fraction form
    510,529.07/765,907.82 = 155,570.87/x
  3. Step 3: Cross multiply
    510,529.07x = 765,907.82 × 155,570.87
  4. Step 4: Simplify right side
    510,529.07x = 119,152,945,897.20
  5. Step 5: Solve for x
    x = 119,152,945,897.20/510,529.07
  6. Step 6: Final answer
    x = 233,391.11

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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.