Home / 292,370.40-438,586.72-92,719.20

Finding the Fourth Proportional to 292,370.40, 438,586.72 and 92,719.20

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Solution

The fourth proportional to 292,370.40, 438,586.72 and 92,719.20 is: 139,088.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,370.40 : 438,586.72 = 92,719.20 : x
  2. Step 2: Convert to fraction form
    292,370.40/438,586.72 = 92,719.20/x
  3. Step 3: Cross multiply
    292,370.40x = 438,586.72 × 92,719.20
  4. Step 4: Simplify right side
    292,370.40x = 40,665,409,809.02
  5. Step 5: Solve for x
    x = 40,665,409,809.02/292,370.40
  6. Step 6: Final answer
    x = 139,088.67

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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.