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Finding the Fourth Proportional to 454,412.16, 626,596.56 and 309,312

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Solution

The fourth proportional to 454,412.16, 626,596.56 and 309,312 is: 426,515.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,412.16 : 626,596.56 = 309,312 : x
  2. Step 2: Convert to fraction form
    454,412.16/626,596.56 = 309,312/x
  3. Step 3: Cross multiply
    454,412.16x = 626,596.56 × 309,312
  4. Step 4: Simplify right side
    454,412.16x = 193,813,835,166.72
  5. Step 5: Solve for x
    x = 193,813,835,166.72/454,412.16
  6. Step 6: Final answer
    x = 426,515.51

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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.