Home / 210,320.40-315,480.60-70,079.03

Finding the Fourth Proportional to 210,320.40, 315,480.60 and 70,079.03

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Solution

The fourth proportional to 210,320.40, 315,480.60 and 70,079.03 is: 105,118.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,320.40 : 315,480.60 = 70,079.03 : x
  2. Step 2: Convert to fraction form
    210,320.40/315,480.60 = 70,079.03/x
  3. Step 3: Cross multiply
    210,320.40x = 315,480.60 × 70,079.03
  4. Step 4: Simplify right side
    210,320.40x = 22,108,572,854.42
  5. Step 5: Solve for x
    x = 22,108,572,854.42/210,320.40
  6. Step 6: Final answer
    x = 105,118.54

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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.