Home / 287,238,666.60-430,857,999.90-171,012,519.90

Finding the Fourth Proportional to 287,238,666.60, 430,857,999.90 and 171,012,519.90

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Solution

The fourth proportional to 287,238,666.60, 430,857,999.90 and 171,012,519.90 is: 256,518,779.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,238,666.60 : 430,857,999.90 = 171,012,519.90 : x
  2. Step 2: Convert to fraction form
    287,238,666.60/430,857,999.90 = 171,012,519.90/x
  3. Step 3: Cross multiply
    287,238,666.60x = 430,857,999.90 × 171,012,519.90
  4. Step 4: Simplify right side
    287,238,666.60x = 73,682,112,281,972,944
  5. Step 5: Solve for x
    x = 73,682,112,281,972,944/287,238,666.60
  6. Step 6: Final answer
    x = 256,518,779.85

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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.