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Finding the Fourth Proportional to 549,420.21, 758,062.91 and 316,918.22

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Solution

The fourth proportional to 549,420.21, 758,062.91 and 316,918.22 is: 437,268.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,420.21 : 758,062.91 = 316,918.22 : x
  2. Step 2: Convert to fraction form
    549,420.21/758,062.91 = 316,918.22/x
  3. Step 3: Cross multiply
    549,420.21x = 758,062.91 × 316,918.22
  4. Step 4: Simplify right side
    549,420.21x = 240,243,942,710.32
  5. Step 5: Solve for x
    x = 240,243,942,710.32/549,420.21
  6. Step 6: Final answer
    x = 437,268.12

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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.