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Finding the Fourth Proportional to 436,451.46, 602,212.71 and 255,128.31

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Solution

The fourth proportional to 436,451.46, 602,212.71 and 255,128.31 is: 352,024.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,451.46 : 602,212.71 = 255,128.31 : x
  2. Step 2: Convert to fraction form
    436,451.46/602,212.71 = 255,128.31/x
  3. Step 3: Cross multiply
    436,451.46x = 602,212.71 × 255,128.31
  4. Step 4: Simplify right side
    436,451.46x = 153,641,510,962.82
  5. Step 5: Solve for x
    x = 153,641,510,962.82/436,451.46
  6. Step 6: Final answer
    x = 352,024.28

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1.5x scale

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.