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Finding the Fourth Proportional to 551,808.51, 761,510.91 and 310,113.12

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Solution

The fourth proportional to 551,808.51, 761,510.91 and 310,113.12 is: 427,964.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,808.51 : 761,510.91 = 310,113.12 : x
  2. Step 2: Convert to fraction form
    551,808.51/761,510.91 = 310,113.12/x
  3. Step 3: Cross multiply
    551,808.51x = 761,510.91 × 310,113.12
  4. Step 4: Simplify right side
    551,808.51x = 236,154,524,214.14
  5. Step 5: Solve for x
    x = 236,154,524,214.14/551,808.51
  6. Step 6: Final answer
    x = 427,964.63

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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.