Home / 205,312.45-307,870.26-105,421.24

Finding the Fourth Proportional to 205,312.45, 307,870.26 and 105,421.24

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Solution

The fourth proportional to 205,312.45, 307,870.26 and 105,421.24 is: 158,081.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,312.45 : 307,870.26 = 105,421.24 : x
  2. Step 2: Convert to fraction form
    205,312.45/307,870.26 = 105,421.24/x
  3. Step 3: Cross multiply
    205,312.45x = 307,870.26 × 105,421.24
  4. Step 4: Simplify right side
    205,312.45x = 32,456,064,568.32
  5. Step 5: Solve for x
    x = 32,456,064,568.32/205,312.45
  6. Step 6: Final answer
    x = 158,081.33

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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.