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Finding the Fourth Proportional to 536,139.60, 740,038.74 and 345,153

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Solution

The fourth proportional to 536,139.60, 740,038.74 and 345,153 is: 476,418.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,139.60 : 740,038.74 = 345,153 : x
  2. Step 2: Convert to fraction form
    536,139.60/740,038.74 = 345,153/x
  3. Step 3: Cross multiply
    536,139.60x = 740,038.74 × 345,153
  4. Step 4: Simplify right side
    536,139.60x = 255,426,591,227.22
  5. Step 5: Solve for x
    x = 255,426,591,227.22/536,139.60
  6. Step 6: Final answer
    x = 476,418.07

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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.