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Finding the Fourth Proportional to 346,279.60, 519,419.40 and 307,788.40

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Solution

The fourth proportional to 346,279.60, 519,419.40 and 307,788.40 is: 461,682.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,279.60 : 519,419.40 = 307,788.40 : x
  2. Step 2: Convert to fraction form
    346,279.60/519,419.40 = 307,788.40/x
  3. Step 3: Cross multiply
    346,279.60x = 519,419.40 × 307,788.40
  4. Step 4: Simplify right side
    346,279.60x = 159,871,266,054.96
  5. Step 5: Solve for x
    x = 159,871,266,054.96/346,279.60
  6. Step 6: Final answer
    x = 461,682.60

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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.