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Finding the Fourth Proportional to 283,328.74, 390,994.59 and 154,268.74

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Solution

The fourth proportional to 283,328.74, 390,994.59 and 154,268.74 is: 212,891.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,328.74 : 390,994.59 = 154,268.74 : x
  2. Step 2: Convert to fraction form
    283,328.74/390,994.59 = 154,268.74/x
  3. Step 3: Cross multiply
    283,328.74x = 390,994.59 × 154,268.74
  4. Step 4: Simplify right side
    283,328.74x = 60,318,242,746.12
  5. Step 5: Solve for x
    x = 60,318,242,746.12/283,328.74
  6. Step 6: Final answer
    x = 212,891.37

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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.