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Finding the Fourth Proportional to 611,417.80, 917,256.30 and 184,918.60

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Solution

The fourth proportional to 611,417.80, 917,256.30 and 184,918.60 is: 277,417.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,417.80 : 917,256.30 = 184,918.60 : x
  2. Step 2: Convert to fraction form
    611,417.80/917,256.30 = 184,918.60/x
  3. Step 3: Cross multiply
    611,417.80x = 917,256.30 × 184,918.60
  4. Step 4: Simplify right side
    611,417.80x = 169,617,750,837.18
  5. Step 5: Solve for x
    x = 169,617,750,837.18/611,417.80
  6. Step 6: Final answer
    x = 277,417.10

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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.