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Finding the Fourth Proportional to 211,356.66, 291,702.22 and 130,810.13

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Solution

The fourth proportional to 211,356.66, 291,702.22 and 130,810.13 is: 180,536.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,356.66 : 291,702.22 = 130,810.13 : x
  2. Step 2: Convert to fraction form
    211,356.66/291,702.22 = 130,810.13/x
  3. Step 3: Cross multiply
    211,356.66x = 291,702.22 × 130,810.13
  4. Step 4: Simplify right side
    211,356.66x = 38,157,603,533.95
  5. Step 5: Solve for x
    x = 38,157,603,533.95/211,356.66
  6. Step 6: Final answer
    x = 180,536.56

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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.