Home / 210,221.16-315,144.18-77,070.32

Finding the Fourth Proportional to 210,221.16, 315,144.18 and 77,070.32

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Solution

The fourth proportional to 210,221.16, 315,144.18 and 77,070.32 is: 115,536.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,221.16 : 315,144.18 = 77,070.32 : x
  2. Step 2: Convert to fraction form
    210,221.16/315,144.18 = 77,070.32/x
  3. Step 3: Cross multiply
    210,221.16x = 315,144.18 × 77,070.32
  4. Step 4: Simplify right side
    210,221.16x = 24,288,262,798.74
  5. Step 5: Solve for x
    x = 24,288,262,798.74/210,221.16
  6. Step 6: Final answer
    x = 115,536.72

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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.