Home / 212,779,617.60-319,169,426.40-121,828,411.20

Finding the Fourth Proportional to 212,779,617.60, 319,169,426.40 and 121,828,411.20

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Solution

The fourth proportional to 212,779,617.60, 319,169,426.40 and 121,828,411.20 is: 182,742,616.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,779,617.60 : 319,169,426.40 = 121,828,411.20 : x
  2. Step 2: Convert to fraction form
    212,779,617.60/319,169,426.40 = 121,828,411.20/x
  3. Step 3: Cross multiply
    212,779,617.60x = 319,169,426.40 × 121,828,411.20
  4. Step 4: Simplify right side
    212,779,617.60x = 38,883,904,121,927,336
  5. Step 5: Solve for x
    x = 38,883,904,121,927,336/212,779,617.60
  6. Step 6: Final answer
    x = 182,742,616.80

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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.