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Finding the Fourth Proportional to 487,145.80, 730,833.90 and 154,721.80

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Solution

The fourth proportional to 487,145.80, 730,833.90 and 154,721.80 is: 232,119.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,145.80 : 730,833.90 = 154,721.80 : x
  2. Step 2: Convert to fraction form
    487,145.80/730,833.90 = 154,721.80/x
  3. Step 3: Cross multiply
    487,145.80x = 730,833.90 × 154,721.80
  4. Step 4: Simplify right side
    487,145.80x = 113,075,936,509.02
  5. Step 5: Solve for x
    x = 113,075,936,509.02/487,145.80
  6. Step 6: Final answer
    x = 232,119.29

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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.