Home / 289,397.63-434,112.84-89,746.40

Finding the Fourth Proportional to 289,397.63, 434,112.84 and 89,746.40

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Solution

The fourth proportional to 289,397.63, 434,112.84 and 89,746.40 is: 134,624.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,397.63 : 434,112.84 = 89,746.40 : x
  2. Step 2: Convert to fraction form
    289,397.63/434,112.84 = 89,746.40/x
  3. Step 3: Cross multiply
    289,397.63x = 434,112.84 × 89,746.40
  4. Step 4: Simplify right side
    289,397.63x = 38,960,064,583.78
  5. Step 5: Solve for x
    x = 38,960,064,583.78/289,397.63
  6. Step 6: Final answer
    x = 134,624.68

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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.