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Finding the Fourth Proportional to 561,808.68, 775,303.56 and 307,159.32

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Solution

The fourth proportional to 561,808.68, 775,303.56 and 307,159.32 is: 423,884.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,808.68 : 775,303.56 = 307,159.32 : x
  2. Step 2: Convert to fraction form
    561,808.68/775,303.56 = 307,159.32/x
  3. Step 3: Cross multiply
    561,808.68x = 775,303.56 × 307,159.32
  4. Step 4: Simplify right side
    561,808.68x = 238,141,714,283.18
  5. Step 5: Solve for x
    x = 238,141,714,283.18/561,808.68
  6. Step 6: Final answer
    x = 423,884.01

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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.