Home / 211,533.47-291,807.48-138,925.95

Finding the Fourth Proportional to 211,533.47, 291,807.48 and 138,925.95

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Solution

The fourth proportional to 211,533.47, 291,807.48 and 138,925.95 is: 191,646.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,533.47 : 291,807.48 = 138,925.95 : x
  2. Step 2: Convert to fraction form
    211,533.47/291,807.48 = 138,925.95/x
  3. Step 3: Cross multiply
    211,533.47x = 291,807.48 × 138,925.95
  4. Step 4: Simplify right side
    211,533.47x = 40,539,631,376.11
  5. Step 5: Solve for x
    x = 40,539,631,376.11/211,533.47
  6. Step 6: Final answer
    x = 191,646.42

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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.