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Finding the Fourth Proportional to 551,806.51, 761,508.15 and 310,111.12

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Solution

The fourth proportional to 551,806.51, 761,508.15 and 310,111.12 is: 427,961.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,806.51 : 761,508.15 = 310,111.12 : x
  2. Step 2: Convert to fraction form
    551,806.51/761,508.15 = 310,111.12/x
  3. Step 3: Cross multiply
    551,806.51x = 761,508.15 × 310,111.12
  4. Step 4: Simplify right side
    551,806.51x = 236,152,144,544.77
  5. Step 5: Solve for x
    x = 236,152,144,544.77/551,806.51
  6. Step 6: Final answer
    x = 427,961.87

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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.