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Finding the Fourth Proportional to 549,128.16, 757,809.60 and 307,404.48

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Solution

The fourth proportional to 549,128.16, 757,809.60 and 307,404.48 is: 424,225.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,128.16 : 757,809.60 = 307,404.48 : x
  2. Step 2: Convert to fraction form
    549,128.16/757,809.60 = 307,404.48/x
  3. Step 3: Cross multiply
    549,128.16x = 757,809.60 × 307,404.48
  4. Step 4: Simplify right side
    549,128.16x = 232,954,066,027.01
  5. Step 5: Solve for x
    x = 232,954,066,027.01/549,128.16
  6. Step 6: Final answer
    x = 424,225.31

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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.