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Finding the Fourth Proportional to 438,048.60, 604,392.83 and 256,663.07

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Solution

The fourth proportional to 438,048.60, 604,392.83 and 256,663.07 is: 354,128.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,048.60 : 604,392.83 = 256,663.07 : x
  2. Step 2: Convert to fraction form
    438,048.60/604,392.83 = 256,663.07/x
  3. Step 3: Cross multiply
    438,048.60x = 604,392.83 × 256,663.07
  4. Step 4: Simplify right side
    438,048.60x = 155,125,317,194.98
  5. Step 5: Solve for x
    x = 155,125,317,194.98/438,048.60
  6. Step 6: Final answer
    x = 354,128.10

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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.