Home / 314,938,877.20-472,408,315.80-84,931,212.40

Finding the Fourth Proportional to 314,938,877.20, 472,408,315.80 and 84,931,212.40

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Solution

The fourth proportional to 314,938,877.20, 472,408,315.80 and 84,931,212.40 is: 127,396,818.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,938,877.20 : 472,408,315.80 = 84,931,212.40 : x
  2. Step 2: Convert to fraction form
    314,938,877.20/472,408,315.80 = 84,931,212.40/x
  3. Step 3: Cross multiply
    314,938,877.20x = 472,408,315.80 × 84,931,212.40
  4. Step 4: Simplify right side
    314,938,877.20x = 40,122,211,008,736,080
  5. Step 5: Solve for x
    x = 40,122,211,008,736,080/314,938,877.20
  6. Step 6: Final answer
    x = 127,396,818.60

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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.