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Finding the Fourth Proportional to 570,479.40, 855,820.80 and 191,523.45

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Solution

The fourth proportional to 570,479.40, 855,820.80 and 191,523.45 is: 287,319.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,479.40 : 855,820.80 = 191,523.45 : x
  2. Step 2: Convert to fraction form
    570,479.40/855,820.80 = 191,523.45/x
  3. Step 3: Cross multiply
    570,479.40x = 855,820.80 × 191,523.45
  4. Step 4: Simplify right side
    570,479.40x = 163,909,752,197.76
  5. Step 5: Solve for x
    x = 163,909,752,197.76/570,479.40
  6. Step 6: Final answer
    x = 287,319.32

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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.