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Finding the Fourth Proportional to 411,431.90, 567,547.39 and 239,330.51

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Solution

The fourth proportional to 411,431.90, 567,547.39 and 239,330.51 is: 330,143.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,431.90 : 567,547.39 = 239,330.51 : x
  2. Step 2: Convert to fraction form
    411,431.90/567,547.39 = 239,330.51/x
  3. Step 3: Cross multiply
    411,431.90x = 567,547.39 × 239,330.51
  4. Step 4: Simplify right side
    411,431.90x = 135,831,403,954.81
  5. Step 5: Solve for x
    x = 135,831,403,954.81/411,431.90
  6. Step 6: Final answer
    x = 330,143.10

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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.