Home / 289,746.56-434,681.28-90,062.08

Finding the Fourth Proportional to 289,746.56, 434,681.28 and 90,062.08

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Solution

The fourth proportional to 289,746.56, 434,681.28 and 90,062.08 is: 135,112.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,746.56 : 434,681.28 = 90,062.08 : x
  2. Step 2: Convert to fraction form
    289,746.56/434,681.28 = 90,062.08/x
  3. Step 3: Cross multiply
    289,746.56x = 434,681.28 × 90,062.08
  4. Step 4: Simplify right side
    289,746.56x = 39,148,300,213.86
  5. Step 5: Solve for x
    x = 39,148,300,213.86/289,746.56
  6. Step 6: Final answer
    x = 135,112.22

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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.