Home / 309,619,559.43-427,275,061.79-170,390,321.19

Finding the Fourth Proportional to 309,619,559.43, 427,275,061.79 and 170,390,321.19

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Solution

The fourth proportional to 309,619,559.43, 427,275,061.79 and 170,390,321.19 is: 235,138,681.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,619,559.43 : 427,275,061.79 = 170,390,321.19 : x
  2. Step 2: Convert to fraction form
    309,619,559.43/427,275,061.79 = 170,390,321.19/x
  3. Step 3: Cross multiply
    309,619,559.43x = 427,275,061.79 × 170,390,321.19
  4. Step 4: Simplify right side
    309,619,559.43x = 72,803,535,014,023,248
  5. Step 5: Solve for x
    x = 72,803,535,014,023,248/309,619,559.43
  6. Step 6: Final answer
    x = 235,138,681.64

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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.