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Finding the Fourth Proportional to 426,888.94, 589,129.40 and 245,628.40

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Solution

The fourth proportional to 426,888.94, 589,129.40 and 245,628.40 is: 338,980.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,888.94 : 589,129.40 = 245,628.40 : x
  2. Step 2: Convert to fraction form
    426,888.94/589,129.40 = 245,628.40/x
  3. Step 3: Cross multiply
    426,888.94x = 589,129.40 × 245,628.40
  4. Step 4: Simplify right side
    426,888.94x = 144,706,911,914.96
  5. Step 5: Solve for x
    x = 144,706,911,914.96/426,888.94
  6. Step 6: Final answer
    x = 338,980.23

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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.