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Finding the Fourth Proportional to 551,923.32, 761,656.32 and 310,216.08

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Solution

The fourth proportional to 551,923.32, 761,656.32 and 310,216.08 is: 428,099.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,923.32 : 761,656.32 = 310,216.08 : x
  2. Step 2: Convert to fraction form
    551,923.32/761,656.32 = 310,216.08/x
  3. Step 3: Cross multiply
    551,923.32x = 761,656.32 × 310,216.08
  4. Step 4: Simplify right side
    551,923.32x = 236,278,037,897.63
  5. Step 5: Solve for x
    x = 236,278,037,897.63/551,923.32
  6. Step 6: Final answer
    x = 428,099.39

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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.