Home / 386,014.12-579,021.42-105,510.28

Finding the Fourth Proportional to 386,014.12, 579,021.42 and 105,510.28

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Solution

The fourth proportional to 386,014.12, 579,021.42 and 105,510.28 is: 158,265.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,014.12 : 579,021.42 = 105,510.28 : x
  2. Step 2: Convert to fraction form
    386,014.12/579,021.42 = 105,510.28/x
  3. Step 3: Cross multiply
    386,014.12x = 579,021.42 × 105,510.28
  4. Step 4: Simplify right side
    386,014.12x = 61,092,712,150.20
  5. Step 5: Solve for x
    x = 61,092,712,150.20/386,014.12
  6. Step 6: Final answer
    x = 158,265.49

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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.