Home / 314,939,095.20-472,408,642.80-84,931,430.40

Finding the Fourth Proportional to 314,939,095.20, 472,408,642.80 and 84,931,430.40

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Solution

The fourth proportional to 314,939,095.20, 472,408,642.80 and 84,931,430.40 is: 127,397,145.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,939,095.20 : 472,408,642.80 = 84,931,430.40 : x
  2. Step 2: Convert to fraction form
    314,939,095.20/472,408,642.80 = 84,931,430.40/x
  3. Step 3: Cross multiply
    314,939,095.20x = 472,408,642.80 × 84,931,430.40
  4. Step 4: Simplify right side
    314,939,095.20x = 40,122,341,766,326,664
  5. Step 5: Solve for x
    x = 40,122,341,766,326,664/314,939,095.20
  6. Step 6: Final answer
    x = 127,397,145.60

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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.