Home / 379,430.40-569,145.60-98,947.65

Finding the Fourth Proportional to 379,430.40, 569,145.60 and 98,947.65

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Solution

The fourth proportional to 379,430.40, 569,145.60 and 98,947.65 is: 148,421.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,430.40 : 569,145.60 = 98,947.65 : x
  2. Step 2: Convert to fraction form
    379,430.40/569,145.60 = 98,947.65/x
  3. Step 3: Cross multiply
    379,430.40x = 569,145.60 × 98,947.65
  4. Step 4: Simplify right side
    379,430.40x = 56,315,619,627.84
  5. Step 5: Solve for x
    x = 56,315,619,627.84/379,430.40
  6. Step 6: Final answer
    x = 148,421.48

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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.