Home / 210,615.60-315,923.40-130,899.45

Finding the Fourth Proportional to 210,615.60, 315,923.40 and 130,899.45

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Solution

The fourth proportional to 210,615.60, 315,923.40 and 130,899.45 is: 196,349.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,615.60 : 315,923.40 = 130,899.45 : x
  2. Step 2: Convert to fraction form
    210,615.60/315,923.40 = 130,899.45/x
  3. Step 3: Cross multiply
    210,615.60x = 315,923.40 × 130,899.45
  4. Step 4: Simplify right side
    210,615.60x = 41,354,199,302.13
  5. Step 5: Solve for x
    x = 41,354,199,302.13/210,615.60
  6. Step 6: Final answer
    x = 196,349.18

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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.