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Finding the Fourth Proportional to 265,482.40, 398,430.96 and 99,317.92

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Solution

The fourth proportional to 265,482.40, 398,430.96 and 99,317.92 is: 149,054.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,482.40 : 398,430.96 = 99,317.92 : x
  2. Step 2: Convert to fraction form
    265,482.40/398,430.96 = 99,317.92/x
  3. Step 3: Cross multiply
    265,482.40x = 398,430.96 × 99,317.92
  4. Step 4: Simplify right side
    265,482.40x = 39,571,334,210.80
  5. Step 5: Solve for x
    x = 39,571,334,210.80/265,482.40
  6. Step 6: Final answer
    x = 149,054.45

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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.