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Finding the Fourth Proportional to 287,425.51, 431,322.79 and 192,762.59

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Solution

The fourth proportional to 287,425.51, 431,322.79 and 192,762.59 is: 289,267.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,425.51 : 431,322.79 = 192,762.59 : x
  2. Step 2: Convert to fraction form
    287,425.51/431,322.79 = 192,762.59/x
  3. Step 3: Cross multiply
    287,425.51x = 431,322.79 × 192,762.59
  4. Step 4: Simplify right side
    287,425.51x = 83,142,898,722.83
  5. Step 5: Solve for x
    x = 83,142,898,722.83/287,425.51
  6. Step 6: Final answer
    x = 289,267.64

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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.