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Finding the Fourth Proportional to 351,030.40, 525,009.60 and 313,859.20

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Solution

The fourth proportional to 351,030.40, 525,009.60 and 313,859.20 is: 469,415.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,030.40 : 525,009.60 = 313,859.20 : x
  2. Step 2: Convert to fraction form
    351,030.40/525,009.60 = 313,859.20/x
  3. Step 3: Cross multiply
    351,030.40x = 525,009.60 × 313,859.20
  4. Step 4: Simplify right side
    351,030.40x = 164,779,093,048.32
  5. Step 5: Solve for x
    x = 164,779,093,048.32/351,030.40
  6. Step 6: Final answer
    x = 469,415.45

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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.