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Finding the Fourth Proportional to 549,214.88, 757,880.60 and 307,495.20

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Solution

The fourth proportional to 549,214.88, 757,880.60 and 307,495.20 is: 424,323.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,214.88 : 757,880.60 = 307,495.20 : x
  2. Step 2: Convert to fraction form
    549,214.88/757,880.60 = 307,495.20/x
  3. Step 3: Cross multiply
    549,214.88x = 757,880.60 × 307,495.20
  4. Step 4: Simplify right side
    549,214.88x = 233,044,646,673.12
  5. Step 5: Solve for x
    x = 233,044,646,673.12/549,214.88
  6. Step 6: Final answer
    x = 424,323.26

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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.