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Finding the Fourth Proportional to 510,303.47, 765,427.05 and 155,289.78

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Solution

The fourth proportional to 510,303.47, 765,427.05 and 155,289.78 is: 232,926.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,303.47 : 765,427.05 = 155,289.78 : x
  2. Step 2: Convert to fraction form
    510,303.47/765,427.05 = 155,289.78/x
  3. Step 3: Cross multiply
    510,303.47x = 765,427.05 × 155,289.78
  4. Step 4: Simplify right side
    510,303.47x = 118,862,998,200.55
  5. Step 5: Solve for x
    x = 118,862,998,200.55/510,303.47
  6. Step 6: Final answer
    x = 232,926.10

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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.