Home / 210,619.02-315,944.85-70,378.14

Finding the Fourth Proportional to 210,619.02, 315,944.85 and 70,378.14

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Solution

The fourth proportional to 210,619.02, 315,944.85 and 70,378.14 is: 105,572.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,619.02 : 315,944.85 = 70,378.14 : x
  2. Step 2: Convert to fraction form
    210,619.02/315,944.85 = 70,378.14/x
  3. Step 3: Cross multiply
    210,619.02x = 315,944.85 × 70,378.14
  4. Step 4: Simplify right side
    210,619.02x = 22,235,610,885.58
  5. Step 5: Solve for x
    x = 22,235,610,885.58/210,619.02
  6. Step 6: Final answer
    x = 105,572.66

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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.