Home / 286,637.58-430,129.17-99,780.30

Finding the Fourth Proportional to 286,637.58, 430,129.17 and 99,780.30

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Solution

The fourth proportional to 286,637.58, 430,129.17 and 99,780.30 is: 149,730.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,637.58 : 430,129.17 = 99,780.30 : x
  2. Step 2: Convert to fraction form
    286,637.58/430,129.17 = 99,780.30/x
  3. Step 3: Cross multiply
    286,637.58x = 430,129.17 × 99,780.30
  4. Step 4: Simplify right side
    286,637.58x = 42,918,417,621.35
  5. Step 5: Solve for x
    x = 42,918,417,621.35/286,637.58
  6. Step 6: Final answer
    x = 149,730.60

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1.5x scale

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.