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Finding the Fourth Proportional to 402,505.37, 555,445.71 and 230,417.53

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Solution

The fourth proportional to 402,505.37, 555,445.71 and 230,417.53 is: 317,969.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,505.37 : 555,445.71 = 230,417.53 : x
  2. Step 2: Convert to fraction form
    402,505.37/555,445.71 = 230,417.53/x
  3. Step 3: Cross multiply
    402,505.37x = 555,445.71 × 230,417.53
  4. Step 4: Simplify right side
    402,505.37x = 127,984,427,395.21
  5. Step 5: Solve for x
    x = 127,984,427,395.21/402,505.37
  6. Step 6: Final answer
    x = 317,969.49

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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.