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Finding the Fourth Proportional to 218,465.51, 301,482.47 and 127,838.89

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Solution

The fourth proportional to 218,465.51, 301,482.47 and 127,838.89 is: 176,417.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,465.51 : 301,482.47 = 127,838.89 : x
  2. Step 2: Convert to fraction form
    218,465.51/301,482.47 = 127,838.89/x
  3. Step 3: Cross multiply
    218,465.51x = 301,482.47 × 127,838.89
  4. Step 4: Simplify right side
    218,465.51x = 38,541,185,015.71
  5. Step 5: Solve for x
    x = 38,541,185,015.71/218,465.51
  6. Step 6: Final answer
    x = 176,417.71

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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.