Home / 386,450.20-579,675.30-102,140.20

Finding the Fourth Proportional to 386,450.20, 579,675.30 and 102,140.20

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Solution

The fourth proportional to 386,450.20, 579,675.30 and 102,140.20 is: 153,210.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,450.20 : 579,675.30 = 102,140.20 : x
  2. Step 2: Convert to fraction form
    386,450.20/579,675.30 = 102,140.20/x
  3. Step 3: Cross multiply
    386,450.20x = 579,675.30 × 102,140.20
  4. Step 4: Simplify right side
    386,450.20x = 59,208,151,077.06
  5. Step 5: Solve for x
    x = 59,208,151,077.06/386,450.20
  6. Step 6: Final answer
    x = 153,210.30

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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.