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Finding the Fourth Proportional to 385,157.43, 531,421.76 and 249,027.57

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Solution

The fourth proportional to 385,157.43, 531,421.76 and 249,027.57 is: 343,596.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,157.43 : 531,421.76 = 249,027.57 : x
  2. Step 2: Convert to fraction form
    385,157.43/531,421.76 = 249,027.57/x
  3. Step 3: Cross multiply
    385,157.43x = 531,421.76 × 249,027.57
  4. Step 4: Simplify right side
    385,157.43x = 132,338,671,219.47
  5. Step 5: Solve for x
    x = 132,338,671,219.47/385,157.43
  6. Step 6: Final answer
    x = 343,596.31

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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.