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Finding the Fourth Proportional to 519,009.40, 778,368.30 and 164,132.20

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Solution

The fourth proportional to 519,009.40, 778,368.30 and 164,132.20 is: 246,152.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,009.40 : 778,368.30 = 164,132.20 : x
  2. Step 2: Convert to fraction form
    519,009.40/778,368.30 = 164,132.20/x
  3. Step 3: Cross multiply
    519,009.40x = 778,368.30 × 164,132.20
  4. Step 4: Simplify right side
    519,009.40x = 127,755,301,489.26
  5. Step 5: Solve for x
    x = 127,755,301,489.26/519,009.40
  6. Step 6: Final answer
    x = 246,152.19

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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.