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Finding the Fourth Proportional to 530,438.56, 732,100.08 and 339,445.42

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Solution

The fourth proportional to 530,438.56, 732,100.08 and 339,445.42 is: 468,495.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,438.56 : 732,100.08 = 339,445.42 : x
  2. Step 2: Convert to fraction form
    530,438.56/732,100.08 = 339,445.42/x
  3. Step 3: Cross multiply
    530,438.56x = 732,100.08 × 339,445.42
  4. Step 4: Simplify right side
    530,438.56x = 248,508,019,137.63
  5. Step 5: Solve for x
    x = 248,508,019,137.63/530,438.56
  6. Step 6: Final answer
    x = 468,495.39

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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.