Home / 210,381.54-315,575.10-70,140.22

Finding the Fourth Proportional to 210,381.54, 315,575.10 and 70,140.22

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Solution

The fourth proportional to 210,381.54, 315,575.10 and 70,140.22 is: 105,211.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,381.54 : 315,575.10 = 70,140.22 : x
  2. Step 2: Convert to fraction form
    210,381.54/315,575.10 = 70,140.22/x
  3. Step 3: Cross multiply
    210,381.54x = 315,575.10 × 70,140.22
  4. Step 4: Simplify right side
    210,381.54x = 22,134,506,940.52
  5. Step 5: Solve for x
    x = 22,134,506,940.52/210,381.54
  6. Step 6: Final answer
    x = 105,211.26

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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.