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Finding the Fourth Proportional to 426,169.93, 588,335.60 and 311,319.63

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Solution

The fourth proportional to 426,169.93, 588,335.60 and 311,319.63 is: 429,782.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,169.93 : 588,335.60 = 311,319.63 : x
  2. Step 2: Convert to fraction form
    426,169.93/588,335.60 = 311,319.63/x
  3. Step 3: Cross multiply
    426,169.93x = 588,335.60 × 311,319.63
  4. Step 4: Simplify right side
    426,169.93x = 183,160,421,307.83
  5. Step 5: Solve for x
    x = 183,160,421,307.83/426,169.93
  6. Step 6: Final answer
    x = 429,782.60

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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.