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Finding the Fourth Proportional to 402,547.44, 555,430.68 and 223,695.60

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Solution

The fourth proportional to 402,547.44, 555,430.68 and 223,695.60 is: 308,652.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,547.44 : 555,430.68 = 223,695.60 : x
  2. Step 2: Convert to fraction form
    402,547.44/555,430.68 = 223,695.60/x
  3. Step 3: Cross multiply
    402,547.44x = 555,430.68 × 223,695.60
  4. Step 4: Simplify right side
    402,547.44x = 124,247,399,221.01
  5. Step 5: Solve for x
    x = 124,247,399,221.01/402,547.44
  6. Step 6: Final answer
    x = 308,652.81

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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.