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Finding the Fourth Proportional to 288,830.51, 398,555.43 and 159,748.47

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Solution

The fourth proportional to 288,830.51, 398,555.43 and 159,748.47 is: 220,435.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,830.51 : 398,555.43 = 159,748.47 : x
  2. Step 2: Convert to fraction form
    288,830.51/398,555.43 = 159,748.47/x
  3. Step 3: Cross multiply
    288,830.51x = 398,555.43 × 159,748.47
  4. Step 4: Simplify right side
    288,830.51x = 63,668,621,647.28
  5. Step 5: Solve for x
    x = 63,668,621,647.28/288,830.51
  6. Step 6: Final answer
    x = 220,435.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.