Home / 314,931,987.20-472,256,263.20-120,778,875.20

Finding the Fourth Proportional to 314,931,987.20, 472,256,263.20 and 120,778,875.20

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Solution

The fourth proportional to 314,931,987.20, 472,256,263.20 and 120,778,875.20 is: 181,113,962.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,931,987.20 : 472,256,263.20 = 120,778,875.20 : x
  2. Step 2: Convert to fraction form
    314,931,987.20/472,256,263.20 = 120,778,875.20/x
  3. Step 3: Cross multiply
    314,931,987.20x = 472,256,263.20 × 120,778,875.20
  4. Step 4: Simplify right side
    314,931,987.20x = 57,038,580,275,451,152
  5. Step 5: Solve for x
    x = 57,038,580,275,451,152/314,931,987.20
  6. Step 6: Final answer
    x = 181,113,962.99

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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.