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Finding the Fourth Proportional to 286,809.34, 395,780.64 and 159,482.20

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Solution

The fourth proportional to 286,809.34, 395,780.64 and 159,482.20 is: 220,076.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,809.34 : 395,780.64 = 159,482.20 : x
  2. Step 2: Convert to fraction form
    286,809.34/395,780.64 = 159,482.20/x
  3. Step 3: Cross multiply
    286,809.34x = 395,780.64 × 159,482.20
  4. Step 4: Simplify right side
    286,809.34x = 63,119,967,184.61
  5. Step 5: Solve for x
    x = 63,119,967,184.61/286,809.34
  6. Step 6: Final answer
    x = 220,076.40

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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.