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Finding the Fourth Proportional to 405,030.84, 606,880.59 and 138,646.04

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Solution

The fourth proportional to 405,030.84, 606,880.59 and 138,646.04 is: 207,741.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,030.84 : 606,880.59 = 138,646.04 : x
  2. Step 2: Convert to fraction form
    405,030.84/606,880.59 = 138,646.04/x
  3. Step 3: Cross multiply
    405,030.84x = 606,880.59 × 138,646.04
  4. Step 4: Simplify right side
    405,030.84x = 84,141,590,556.36
  5. Step 5: Solve for x
    x = 84,141,590,556.36/405,030.84
  6. Step 6: Final answer
    x = 207,741.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.