Home / 489,421.74-734,131.16-134,436.10

Finding the Fourth Proportional to 489,421.74, 734,131.16 and 134,436.10

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Solution

The fourth proportional to 489,421.74, 734,131.16 and 134,436.10 is: 201,653.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,421.74 : 734,131.16 = 134,436.10 : x
  2. Step 2: Convert to fraction form
    489,421.74/734,131.16 = 134,436.10/x
  3. Step 3: Cross multiply
    489,421.74x = 734,131.16 × 134,436.10
  4. Step 4: Simplify right side
    489,421.74x = 98,693,730,038.88
  5. Step 5: Solve for x
    x = 98,693,730,038.88/489,421.74
  6. Step 6: Final answer
    x = 201,653.75

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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.