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Finding the Fourth Proportional to 329,411.70, 494,117.55 and 290,045.70

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Solution

The fourth proportional to 329,411.70, 494,117.55 and 290,045.70 is: 435,068.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,411.70 : 494,117.55 = 290,045.70 : x
  2. Step 2: Convert to fraction form
    329,411.70/494,117.55 = 290,045.70/x
  3. Step 3: Cross multiply
    329,411.70x = 494,117.55 × 290,045.70
  4. Step 4: Simplify right side
    329,411.70x = 143,316,670,672.04
  5. Step 5: Solve for x
    x = 143,316,670,672.04/329,411.70
  6. Step 6: Final answer
    x = 435,068.55

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1.5x scale

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.