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Finding the Fourth Proportional to 531,021.02, 732,805.18 and 289,303.52

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Solution

The fourth proportional to 531,021.02, 732,805.18 and 289,303.52 is: 399,236.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,021.02 : 732,805.18 = 289,303.52 : x
  2. Step 2: Convert to fraction form
    531,021.02/732,805.18 = 289,303.52/x
  3. Step 3: Cross multiply
    531,021.02x = 732,805.18 × 289,303.52
  4. Step 4: Simplify right side
    531,021.02x = 212,003,113,660.95
  5. Step 5: Solve for x
    x = 212,003,113,660.95/531,021.02
  6. Step 6: Final answer
    x = 399,236.77

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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.