Home / 309,943,899.12-427,722,565.62-170,714,667.72

Finding the Fourth Proportional to 309,943,899.12, 427,722,565.62 and 170,714,667.72

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Solution

The fourth proportional to 309,943,899.12, 427,722,565.62 and 170,714,667.72 is: 235,586,233.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,943,899.12 : 427,722,565.62 = 170,714,667.72 : x
  2. Step 2: Convert to fraction form
    309,943,899.12/427,722,565.62 = 170,714,667.72/x
  3. Step 3: Cross multiply
    309,943,899.12x = 427,722,565.62 × 170,714,667.72
  4. Step 4: Simplify right side
    309,943,899.12x = 73,018,515,666,164,192
  5. Step 5: Solve for x
    x = 73,018,515,666,164,192/309,943,899.12
  6. Step 6: Final answer
    x = 235,586,233.10

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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.