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Finding the Fourth Proportional to 561,212.16, 774,460.18 and 306,564.36

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Solution

The fourth proportional to 561,212.16, 774,460.18 and 306,564.36 is: 423,051.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,212.16 : 774,460.18 = 306,564.36 : x
  2. Step 2: Convert to fraction form
    561,212.16/774,460.18 = 306,564.36/x
  3. Step 3: Cross multiply
    561,212.16x = 774,460.18 × 306,564.36
  4. Step 4: Simplify right side
    561,212.16x = 237,421,889,427.19
  5. Step 5: Solve for x
    x = 237,421,889,427.19/561,212.16
  6. Step 6: Final answer
    x = 423,051.93

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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.