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Finding the Fourth Proportional to 531,021.22, 732,807.09 and 289,303.05

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Solution

The fourth proportional to 531,021.22, 732,807.09 and 289,303.05 is: 399,237.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,021.22 : 732,807.09 = 289,303.05 : x
  2. Step 2: Convert to fraction form
    531,021.22/732,807.09 = 289,303.05/x
  3. Step 3: Cross multiply
    531,021.22x = 732,807.09 × 289,303.05
  4. Step 4: Simplify right side
    531,021.22x = 212,003,326,198.62
  5. Step 5: Solve for x
    x = 212,003,326,198.62/531,021.22
  6. Step 6: Final answer
    x = 399,237.01

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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.